tint the library background and fab from the current artwork

app/src/main/kotlin/com/subtracks/ui/library/LibraryScreen.kt

@@ -97,6 +97,11 @@ import com.subtracks.data.prefs.ListQuery
 import com.subtracks.data.prefs.PlaylistSort
 import com.subtracks.data.prefs.SongSort
 import com.subtracks.data.prefs.StarredFilter
+import com.subtracks.playback.PlaybackController
+import com.subtracks.ui.theme.ArtworkColors
+import com.subtracks.ui.theme.librarySurfaceColor
+import com.subtracks.ui.theme.rememberArtworkColors
+import org.koin.compose.koinInject
 import org.koin.compose.viewmodel.koinViewModel
 import kotlin.math.abs
 import kotlin.math.roundToInt
@@ -167,6 +172,7 @@ fun LibraryRoute(
     onOpenSettings: () -> Unit,
     bottomInset: Dp,
     viewModel: LibraryViewModel = koinViewModel(),
+    playbackController: PlaybackController = koinInject(),
 ) {
     var selectedTab by rememberSaveable { mutableStateOf(LibraryTab.Albums) }
     var previousTab by rememberSaveable { mutableStateOf(LibraryTab.Albums) }
@@ -187,11 +193,14 @@ fun LibraryRoute(
             val term by viewModel.search(tab.listTab()).collectAsStateWithLifecycle()
             "${query.sort}|${query.descending}|${query.starred}|$term"
         }
+    val playback by playbackController.state.collectAsStateWithLifecycle()
+    val artwork = rememberArtworkColors(playbackController.coverArt(playback.item, thumbnail = true))
     LibraryScreen(
         selectedTab = selectedTab,
         onTabSelected = { selectedTab = it },
         syncing = syncing,
         bottomInset = bottomInset,
+        artwork = artwork,
         albums = viewModel.albums.collectAsLazyPagingItems(),
         artists = viewModel.artists.collectAsLazyPagingItems(),
         songs = viewModel.songs.collectAsLazyPagingItems(),
@@ -257,6 +266,7 @@ fun LibraryScreen(
     onClearFilters: () -> Unit = {},
     search: String = "",
     onSearchChange: (String) -> Unit = {},
+    artwork: ArtworkColors? = null,
     modifier: Modifier = Modifier,
 ) {
     val pagerState =
@@ -302,7 +312,7 @@ fun LibraryScreen(
             modifier =
                 Modifier
                     .fillMaxSize()
-                    .background(MaterialTheme.colorScheme.background)
+                    .background(artwork?.let(::librarySurfaceColor) ?: MaterialTheme.colorScheme.background)
                     .nestedScroll(scrollBehavior.nestedScrollConnection),
         ) {
             Column(
@@ -419,8 +429,8 @@ fun LibraryScreen(
         if (!searchActive) {
             FloatingActionButton(
                 onClick = { showOptions = true },
-                containerColor = MaterialTheme.colorScheme.surfaceContainerHigh,
+                containerColor = artwork?.scheme?.primary ?: MaterialTheme.colorScheme.surfaceContainerHigh,
-                contentColor = MaterialTheme.colorScheme.onBackground,
+                contentColor = artwork?.scheme?.onPrimary ?: MaterialTheme.colorScheme.onBackground,
                 modifier = Modifier.align(Alignment.BottomEnd).padding(16.dp),
             ) {
                 Box {
@@ -433,7 +443,7 @@ fun LibraryScreen(
                                     .offset(x = 4.dp, y = (-4).dp)
                                     .size(8.dp)
                                     .clip(CircleShape)
-                                    .background(MaterialTheme.colorScheme.primary),
+                                    .background(artwork?.scheme?.onPrimary ?: MaterialTheme.colorScheme.primary),
                         )
                     }
                 }

app/src/main/kotlin/com/subtracks/ui/theme/ArtworkTheme.kt

@@ -33,6 +33,7 @@ private const val DARKEN_START_SCREENS = 0.5f
 private const val DARKEN_END_SCREENS = 1.5f
 private const val DARKEN_KNEE = 0.2f
 private const val PLAYER_SURFACE_SATURATION_FACTOR = 1.6f
+private const val LIBRARY_SURFACE_LIGHTNESS = 0.10f
 
 @Immutable
 data class ArtworkColors(
@@ -211,6 +212,11 @@ fun playerSurfaceColor(artwork: ArtworkColors): Color {
     return Color.hsl(hue, (saturation * PLAYER_SURFACE_SATURATION_FACTOR).coerceIn(0f, 1f), lightness)
 }
 
+fun librarySurfaceColor(artwork: ArtworkColors): Color {
+    val (hue, saturation, _) = artwork.scheme.surfaceContainerHigh.toHsl()
+    return Color.hsl(hue, saturation, LIBRARY_SURFACE_LIGHTNESS)
+}
+
 fun heroBarColor(
     artwork: ArtworkColors?,
     scrollPx: Float,

app/src/test/kotlin/com/subtracks/ui/AppScreenshotTest.kt

@@ -117,6 +117,44 @@ class AppScreenshotTest {
         composeRule.onRoot().captureRoboImage("src/test/screenshots/library_playlists.png")
     }
 
+    @Test
+    fun libraryWithMiniPlayer() {
+        composeRule.setContent {
+            SubtracksTheme {
+                val artwork = artworkColorsFromSeed(Color.rgb(120, 80, 200))
+                Column(Modifier.fillMaxSize()) {
+                    LibraryScreen(
+                        selectedTab = LibraryTab.Albums,
+                        onTabSelected = {},
+                        albums = remember { flowOf(PagingData.from(Fixtures.albums)) }.collectAsLazyPagingItems(),
+                        artists = remember { flowOf(PagingData.from(Fixtures.artists)) }.collectAsLazyPagingItems(),
+                        songs = remember { flowOf(PagingData.from(Fixtures.songItems)) }.collectAsLazyPagingItems(),
+                        playlists = remember { flowOf(PagingData.from(Fixtures.playlists)) }.collectAsLazyPagingItems(),
+                        coverArt = { id, _ -> id?.let { CoverArtRef(it, "test:$it") } },
+                        onAlbumClick = {},
+                        onArtistClick = {},
+                        onPlaylistClick = {},
+                        onSongClick = {},
+                        onSync = {},
+                        onOpenSettings = {},
+                        artwork = artwork,
+                        modifier = Modifier.weight(1f),
+                    )
+                    MiniPlayer(
+                        state = Fixtures.playbackState(),
+                        coverArt = CoverArtRef("art-al-kid-a", "test:art-al-kid-a"),
+                        artwork = artwork,
+                        onExpand = {},
+                        onPlayPause = {},
+                        onNext = {},
+                    )
+                }
+            }
+        }
+        awaitTag(ALBUM_COVER_TAG)
+        composeRule.onRoot().captureRoboImage("src/test/screenshots/library_with_mini_player.png")
+    }
+
     @Test
     fun albumDetail() {
         composeRule.setContent {
@@ -396,6 +434,7 @@ class AppScreenshotTest {
                     onSongClick = {},
                     onSync = {},
                     onOpenSettings = {},
+                    artwork = artworkColorsFromSeed(Color.rgb(120, 80, 200)),
                 )
             }
         }